Global Patent Index - EP 0761697 B2

EP 0761697 B2 20060412 - Preparation of polyvinyl ester dispersions

Title (en)

Preparation of polyvinyl ester dispersions

Title (de)

Herstellung von Polyvinylester-Dispersionen

Title (fr)

Préparation de dispersions d'esters polyvinyliques

Publication

EP 0761697 B2 20060412 (DE)

Application

EP 96113244 A 19960819

Priority

DE 19531515 A 19950826

Abstract (en)

[origin: EP0761697A2] Prodn. of protective colloid-stabilised poly(vinyl ester)-contg. dispersions is effected by polymerisation of the vinyl ester (and opt. comonomer(s)) using a water-soluble cationic azo initiator, pref. an azo-amidine. A claimed dispersion, opt. contg. units from a neutral or anionic comonomer, has solids content at least 45 (pref. 60-70) wt.%

IPC 8 full level

C08F 18/04 (2006.01); C04B 24/26 (2006.01); C04B 26/04 (2006.01); C08F 2/00 (2006.01); C08F 2/22 (2006.01); C08F 4/04 (2006.01); C08F 218/04 (2006.01); C08L 29/04 (2006.01); C08L 31/02 (2006.01); C08L 31/04 (2006.01)

CPC (source: EP US)

C04B 24/26 (2013.01 - EP US); C04B 26/04 (2013.01 - EP US); C08F 218/04 (2013.01 - EP US); C04B 2103/0057 (2013.01 - EP US)

Citation (opposition)

Opponent :

  • DE 4402408 A1 19950803 - WACKER CHEMIE GMBH [DE]
  • US 4921898 A 19900501 - LENNEY WILLIAM E [US], et al
  • DE 3323851 A1 19850103 - WACKER CHEMIE GMBH [DE]
  • US 4278727 A 19810714 - BRABETZ HARTMUT, et al
  • Mowilith-Handbuch, 5. Aufl., 1970, S. 38-41
  • Journal of Polymer Science, Polymer Chemistry Edition Vol. 11, 1973, S. 1673-1681
  • Wako Pure Chemical Industries Ltd. "WACO VA-061" Product Information, 30. Juni 1992
  • N. Minamii et al. Polymerizations of Vinyl Monomers, Vol. 28, Dec. 1987, Hrsg. Faculty of Engineering Osaka City University
  • Polymer Reaction Engineering, Hrsg. K.-H Reichert et al., Huethig & Wepf Verlag, 1986, S. 101-124

Designated contracting state (EPC)

AT BE CH DE ES FR GB IT LI NL SE

DOCDB simple family (publication)

US 6331587 B1 20011218; AT E192757 T1 20000515; DE 19531515 A1 19970227; DE 19531515 B4 20051222; DE 59605168 D1 20000615; EP 0761697 A2 19970312; EP 0761697 A3 19971022; EP 0761697 B1 20000510; EP 0761697 B2 20060412; ES 2147875 T3 20001001; ES 2147875 T5 20060801; JP 2007084835 A 20070405; JP 4274494 B2 20090610; JP 4575912 B2 20101104; JP H09136910 A 19970527

DOCDB simple family (application)

US 70198896 A 19960823; AT 96113244 T 19960819; DE 19531515 A 19950826; DE 59605168 T 19960819; EP 96113244 A 19960819; ES 96113244 T 19960819; JP 2006330286 A 20061207; JP 22271296 A 19960823